Hydraulic



(No Mel.)- I

' H. C. MGOARTY.

HYDRAULIC, STEAM, AIR, AND VACUUM BRAKE. No. 330,796. Patented Nov. 1'7, 1885.

:fi /m flf f I N4 PETERS. Phnlo-lilhognphen Wahi nnnnnnn C UNITED STATES PATENT FFICE.

HARitY O. MOOARTY, OF WILLIAMSPORT, ASSIGNOR OF ONE-HALF TO JOHN F. BIOKEL, OF MORTON, PENNSYLVANIA,

HYDRAULIC, STEAM,AIR,AND VACUUM BRAKE.

SPECEE'ICATION forming part of Letters Patent No. 330,796, dated November 17, 1885. Application filed March 20, 1884. Seria1 No. 124,866. (No modell T aZZ whom, it may concern.-

Be it known that I, HARRY O. MOGARTY, a

' citizen of the United States, residing at Williamsport, county of Lycoming, State of Pennsylvania, have invented a new and useful Improvement in Hydraulic, Steam, Air, and

Vacuum Brakes, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a longitudinal section of a cock employed for brakes embodying my invention. Fig. 2 is another view thereof, showing the jflugOflhG cock in a position at a right angle to ction in. line the shell A is a port, a, and in the plug is the transverse passage 6, and a port, 0, the latter extending through the side of the plug into the passage b, the port a in the shell being so disposed that the port a does not register therewith. The plug B is provided with a suitable handle, B, for operating purposes.

When the plug is in position shown in Fig. 2, the air, steam, 850., passes through the cock 3 5 and reaches the brake mechanism, it being seen that the port 0 is closed by the side wall of the shell A. When the engine or a car is to be detached,the plugB is rotated a quarterturn, thus closing the passage 6 to the cock 0 and placing it in communication with the port a of the shell, the port 0 being also in communication with said port' a, thus causingthe connected hose on the side leading from the engine to be in communication with the atmosphere through the port a, passage 12, and port (4, whereby the air, steam, 850., escapes, and the hose and couplings are released of pressure, and the disconnection of .the same is easilyaccol lpl he t 5 Having thus desoribed ifi"\LQELH6B1; What I claim as new, and desire to secure by Lttra Patent, is-

The device for releasing the pressure on the hose and couplings of a steam, hydraulic,, ,5 5 air, or vacuum brake, the same consisting of the shell A, having the opening a on one side, in combination with the plug B, having transverse opening b, and opening 0, the said openings a and c not registering during any portion of the rotation of the said plug B, substantially as and for the purpose set forth.

H. O. MOCARTY.

Witnesses:

JOHN A. W'IEDERsHEIM,

J NO. K. PLITT. 

